Zirconium oxide powder cleaning equipment

Abstract

Zirconium oxide powder cleaning equipment relates to the field of zirconium oxide production and comprises a feeding mechanism, a pickling mechanism and a soaking and washing mechanism. The material conveying mechanism is used for conveying raw material zirconium oxide into the pickling mechanism, the pickling mechanism comprises a pickling box and a spraying plate, the soaking and washing mechanism is used for soaking the pickled zirconium oxide with clear water so as to remove acid liquor on the surface, the soaking and washing mechanism comprises a soaking and washing box, a second deposition tank and a conveying assembly, and a drying mechanism is arranged at the output end of the conveying assembly. The drying mechanism comprises a drying box and a stirring rod, and a stir-frying tray of an inverted conical structure is arranged at the bottom of the drying box. Zirconium oxide is fed into the acid pickling box through the grate water net belt, the surfaces of zirconium oxide powder particles are subjected to acid pickling, the zirconium oxide subjected to acid pickling is fed into the soaking and washing box to be soaked with clear water, acid liquor on the surfaces of the zirconium oxide powder particles is fully diluted and soaked away, finally, the zirconium oxide is fully dried, and the cleaning effect of the zirconium oxide is improved; and the surface residue of zirconium oxide after acid pickling is reduced.

Description

Technical Field

[0001] This invention relates to the field of zirconium oxide production technology, and in particular to a zirconium oxide powder cleaning device. Background Technology

[0002] Zirconia powder production is a field of significant industrial value. Zirconia powder possesses excellent properties such as high hardness, high strength, high temperature resistance, abrasion resistance, and good chemical stability, making it widely used in numerous industries, including ceramics, refractories, electronics, and aerospace. During the production process, impurities such as metal ions and unreacted raw materials may be introduced. Acid washing can effectively dissolve and remove these impurities, improving the purity of the zirconia powder and enabling it to better meet the high-purity requirements of applications such as high-end ceramics and electronic materials.

[0003] Currently, in the zirconia pickling process, although there is a water washing step after pickling, because zirconia is a fine-particle powder, a lot of the acid carried on the surface during the pickling process cannot be effectively removed by the conventional water washing step. Moreover, after the zirconia dries, the pH value of the acid stains on the zirconia dries further decreases, and the acidity becomes stronger. This can easily accelerate the acid etching of the surface substances of the zirconia powder particles in the later stages, causing the surface of the zirconia powder particles to change color and reduce the purity of the zirconia dries. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide a zirconia powder cleaning device, which soaks the acid-washed zirconia in a rinsing tank with clean water, thereby fully diluting and soaking away the acid on the surface of the zirconia powder particles and reducing the surface residue of zirconia after acid washing.

[0006] To achieve the above objectives, the present invention proposes a zirconia powder cleaning device, comprising a feeding mechanism, an acid washing mechanism, and a soaking mechanism. The feeding mechanism is used to feed raw zirconia into the acid washing mechanism. The acid washing mechanism includes an acid washing tank and a spray plate. The spray plate is disposed inside the acid washing tank and above the feeding mechanism. A first deposition tank is disposed at the bottom of the acid washing tank, and a return pipe is disposed inside the first deposition tank and connected to the spray plate. The soaking mechanism is used to soak the acid-washed zirconia in clean water to remove surface acid. The soaking mechanism includes a soaking tank, a second deposition tank, and a transfer assembly. The soaking tank is disposed at the output end of the acid washing tank, the second deposition tank is disposed at the bottom of the soaking tank, and the transfer assembly is disposed inside the second deposition tank. The transfer assembly is used to transfer the soaked zirconia out.

[0007] Furthermore, the output end of the transmission component is provided with a drying mechanism, which includes a drying chamber and a stirring rod. The drying chamber is located at the output end of the transmission component, and the bottom of the drying chamber is provided with a stir-frying tray with an inverted conical structure. The stirring rod is rotatably mounted on the upper surface of the stir-frying tray. A heating plate is provided on the inner wall of the stir-frying tray. A hot air assembly is provided on the drying chamber. The hot air assembly is used to supply hot air into the drying chamber. The hot air assembly includes a heating chamber, a blower, and a heating pipe. The heating chamber is located on the drying chamber, and the heating pipe is located inside the heating chamber. The air inlet of the heating pipe is connected to the blower, and the air outlet of the heating pipe is connected to the interior of the drying chamber.

[0008] Furthermore, the stirring rod has a hollow structure, and a rotatable gas supply connector is provided at the top of the stirring rod. The stirring rod is connected to the heating tube through the gas supply connector. A gas outlet is provided on the side of the stirring rod that contacts the frying tray, and the gas outlet is connected to the interior of the stirring rod.

[0009] Furthermore, a waste heat pipe is provided on the top of the drying box, and a heat exchange pipe is provided inside the pickling box. The heat exchange pipe is connected to the waste heat pipe and is wound around the outer surface of the return pipe.

[0010] Furthermore, a discharge assembly is provided at the bottom of the drying box. The discharge assembly includes a discharge pipe, a discharge spiral shaft, and a spiral shaft drive motor. The discharge pipe is located at the bottom discharge end of the roasting tray, the discharge spiral shaft is located inside the discharge pipe, and the power shaft of the spiral shaft drive motor is connected to the discharge spiral shaft.

[0011] Furthermore, the transmission assembly includes a material conveying screw shaft and a grate plate, wherein the material conveying screw shaft is inclinedly disposed inside the soaking and washing tank, and a reduction motor for driving its rotation is disposed at the bottom end of the material conveying screw shaft. A return trough is disposed at the top of the second sedimentation tank, and the grate plate is disposed on the upper surface of the return trough and located on the lower surface of the material conveying screw shaft. The bottom of the return trough is connected to the inside of the soaking and washing tank through a return water pipe.

[0012] Furthermore, the feeding assembly includes a feeding hopper, a discharging assembly, and a conveyor belt assembly, wherein the conveyor belt assembly horizontally penetrates the pickling tank, and the conveyor belt assembly includes a grate mesh belt and a drive roller, wherein the drive roller is located inside the grate mesh belt, and the drive roller is rotatably connected to the pickling tank.

[0013] Furthermore, the feeding hopper is located at the feed end of the grate mesh belt, and the discharge assembly is located at the bottom of the feeding hopper. The discharge assembly includes a discharge port and a discharge roller, wherein the discharge port is located at the bottom of the feeding hopper, and the discharge roller is located at the outlet of the discharge port.

[0014] Furthermore, water-blocking rubber strips are provided on both sides of the grate mesh belt, a rolling roller is provided on the upper surface of the grate mesh belt, a scraper is provided at the discharge end of the grate mesh belt, and a conveyor belt rinsing assembly is provided below the grate mesh belt. The conveyor belt rinsing assembly includes a rinsing head, a suction pipe, and a rinsing pump. The rinsing pump is located below the grate mesh belt, the rinsing head is inclined upward at the discharge end of the rinsing pump, and the suction pipe is located at the inlet end of the rinsing pump.

[0015] Furthermore, a return pump is installed on the return pipe, and a funnel-shaped back suction port is provided at the water inlet end of the return pipe. The first sedimentation tank has an inverted conical structure, and a plug is provided at the bottom of the first sedimentation tank. The back suction port is located directly above the plug, and one end of the plug corresponding to the back suction port has a conical structure. Beneficial effects

[0016] Zirconia is fed into an acid pickling tank via a grate conveyor belt. The zirconia powder particles are sprayed with acid in the pickling tank to pickle them. After pickling, the zirconia is sent to a soaking tank for immersion in clean water. The acid on the surface of the zirconia powder particles is fully diluted and soaked away, which improves the cleaning effect of zirconia and reduces the surface residue after pickling.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of a zirconia powder cleaning device according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0021] Figure 3 This is a cross-sectional structural schematic diagram of a zirconium oxide powder cleaning device according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0023] Figure 5 This is a schematic diagram of the conveyor belt rinsing assembly in a zirconia powder cleaning device according to an embodiment of the present invention;

[0024] Figure 6 This is a right sectional view of the immersion tank in a zirconium oxide powder cleaning apparatus according to an embodiment of the present invention.

[0025] As shown in the figure: 1. Feeding mechanism; 11. Feeding hopper; 12. Discharge assembly; 121. Discharge port; 122. Discharge roller drive motor; 123. Discharge roller; 13. Conveyor belt assembly; 131. Grate mesh belt; 132. Water-blocking rubber strip; 133. Drive roller; 134. Drive roller motor; 135. Support plate; 14. Roller roller; 141. Support roller; 15. Scraper; 2. Pickling mechanism; 21. Pickling tank; 22. Return pipe; 221. Return pump; 222. Heat exchange pipe; 223. Back suction port; 23. First sedimentation tank; 231. Plug; 24. Spray plate; 25. Conveyor belt rinsing assembly; 251. Rinsing head; 252. Suction pipe; 253. 3. Rinsing pump; 31. Soaking and washing mechanism; 32. Soaking and washing tank; 33. Second sedimentation tank; 33. Conveying assembly; 331. Gear motor; 332. Material conveying screw shaft; 333. Return water pipe; 334. Grate plate; 335. Return trough; 341. Water outlet; 342. Water inlet; 4. Drying mechanism; 41. Drying box; 42. Stirring motor; 43. Hot air assembly; 431. Heating box; 432. Air pump; 433. Heating pipe; 434. Air supply connector; 44. Discharge assembly; 441. Discharge pipe; 442. Discharge screw shaft; 443. Screw shaft drive motor; 45. Waste heat pipe; 46. Roasting tray; 461. Heating plate; 47. Stirring rod; 5. Support. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The zirconia powder cleaning equipment of the present invention will now be described with reference to the accompanying drawings.

[0028] like Figures 1-3 As shown, the zirconia powder cleaning equipment provided in this embodiment of the invention includes a support 5, and a feeding mechanism 1, an acid washing mechanism 2 and a soaking mechanism 3 disposed on the support 5, wherein the feeding mechanism 1 is used to feed the raw material zirconia into the acid washing mechanism 2.

[0029] The material feeding assembly includes a feeding hopper 11, a discharging assembly 12, and a conveyor belt assembly 13. The conveyor belt assembly 13 horizontally passes through the pickling tank 21. The conveyor belt assembly 13 includes a grate mesh belt 131 and a drive roller 133. The drive roller 133 is located inside the grate mesh belt 131 and is rotatably connected to the pickling tank 21 through a support plate 135 built into the grate mesh belt 131. One end of the drive roller 133 is provided with a drive roller motor 134 to drive its rotation.

[0030] The pickling mechanism 2 includes a pickling tank 21 and a spray plate 24. The spray plate 24 is located inside the pickling tank 21 and above the material feeding mechanism 1. A first sedimentation tank 23 is provided at the bottom of the pickling tank 21. A return pipe 22 is provided inside the first sedimentation tank 23 and is connected to the spray plate 24.

[0031] The rinsing mechanism 3 is used to immerse the pickled zirconia in clean water to remove the acid from the surface. The rinsing mechanism 3 includes a rinsing tank 31, a second deposition tank 32, and a transfer assembly 33. The rinsing tank 31 is located at the output end of the pickling tank 21, the second deposition tank 32 is located at the bottom of the rinsing tank 31, and the transfer assembly 33 is located inside the second deposition tank 32. The transfer assembly 33 is used to transfer the rinsed zirconia out.

[0032] The output end of the transmission component 33 is provided with a drying mechanism 4. The drying mechanism 4 includes a drying box 41 and a stirring rod 47. The drying box 41 is located at the output end of the transmission component 33. The bottom of the drying box 41 is provided with a stir-frying tray 46 with an inverted conical structure. The stirring rod 47 is rotatably mounted on the upper surface of the stir-frying tray 46. The drying box 41 is provided with a stirring motor 42 that drives the stirring rod 47 to rotate. The inner wall of the stir-frying tray 46 is provided with a heating plate 461.

[0033] Specifically, during the pickling process of zirconia, zirconia is first placed in the feeding hopper 11. The zirconia is gradually spread on the grate mesh belt 131 through the feeding assembly 12. As the drive roller 133 rotates, it drives the grate mesh belt 131 to continuously transfer the zirconia to the right. When the grate mesh belt 131 carries the zirconia into the pickling tank 21, the return pump 221 absorbs the acid in the pickling tank 21 through the return pipe 22 and sprays it onto the zirconia through the spray plate 24, so that the zirconia can fully contact the acid. After the acid is filtered by the grate mesh belt 131, it falls back to the bottom of the pickling tank 21 for reuse by the return pipe 22.

[0034] Subsequently, the acid-washed zirconia is conveyed to the right via the grate conveyor belt 131 into the soaking tank 31. The soaking tank 31 continuously injects clean water through the inlet 342 and continuously discharges water from the outlet 341, keeping the water in the soaking tank 31 clear. The acid-washed zirconia enters the soaking tank 31 for cleaning and soaking, which fully dilutes and transfers the acid on the surface of the zirconia particles. The zirconia particles sink to the bottom of the second deposition tank 32 under the action of gravity and are then transferred upwards by the transfer component 33, with water being continuously removed during the transfer process.

[0035] Zirconia is then fed into drying oven 41, where it is continuously stirred by stirring rod 47 in stir-frying tray 46 to fully evaporate the surface moisture of the zirconia powder particles and keep the zirconia in a fluffy state to prevent caking. The dried zirconia is then discharged from the bottom of drying oven 41.

[0036] In one embodiment of the present invention, such as Figure 3 As shown, a hot air assembly 43 is provided on the drying chamber 41. The hot air assembly 43 is used to supply hot air to the interior of the drying chamber 41. The hot air assembly 43 includes a heating box 431, an air pump 432, and a heating pipe 433. The heating box 431 is installed on the drying chamber 41, and the heating pipe 433 is installed inside the heating box 431. The air inlet of the heating pipe 433 is connected to the air pump 432, and the air outlet of the heating pipe 433 is connected to the interior of the drying chamber 41.

[0037] The stirring rod 47 has a hollow structure. A rotatable gas supply connector 434 is provided on the top of the stirring rod 47. The stirring rod 47 is connected to the heating tube 433 through the gas supply connector 434. A gas vent is provided on the side of the stirring rod 47 that contacts the frying tray 46. The gas vent is connected to the inside of the stirring rod 47.

[0038] Specifically, in order to quickly evaporate and transfer the moisture in the zirconium oxide in the drying oven 41, an external air is drawn in by an air pump 432 and transferred to a heating tube 433. The heating tube 433 heats the air inside by electric heating elements on its surface. The heated air is then sent into a rotating stirring rod 47 through an air supply connector 434 and then transmitted to the air outlet through the hollow stirring rod 47. As the stirring rod 47 stirs and roasts the zirconium oxide, the hot air dries the zirconium oxide, and the water vapor is incorporated into the hot air and transferred out, thus drying the zirconium oxide quickly.

[0039] In one embodiment of the present invention, such as Figure 3 and Figure 4 As shown, a waste heat pipe 45 is provided on the top of the drying box 41, and a heat exchange pipe 222 is provided inside the pickling box 21. The heat exchange pipe 222 is connected to the waste heat pipe 45 and is wound around the outer surface of the return pipe 22.

[0040] Specifically, the hot air entering the drying oven 41 will have a large amount of residual heat after being heated by the frying tray 46. The hot air is transferred to the heat exchange tube 222 through the waste heat pipe 45. The heat exchange tube 222 heats the acid in the return pipe 22, making the acid sprayed by the spray plate 24 at a higher temperature, enhancing the chemical reaction activity between the acid and the heat, and making full use of the heat.

[0041] In one embodiment of the present invention, such as Figure 3 As shown, a discharge assembly 44 is provided at the bottom of the drying box 41. The discharge assembly 44 includes a discharge pipe 441, a discharge screw shaft 442, and a screw shaft drive motor 443. The discharge pipe 441 is located at the bottom discharge end of the frying tray 46, the discharge screw shaft 442 is located inside the discharge pipe 441, and the power shaft of the screw shaft drive motor 443 is connected to the discharge screw shaft 442.

[0042] Specifically, during the drying process of zirconium oxide in the drying chamber 41, the dried zirconium oxide continuously slides down the inverted conical roasting tray 46 and accumulates above the discharge screw shaft 442. The discharge screw shaft 442 keeps the discharge pipe 441 of the drying chamber 41 sealed from the outside airflow, preventing hot air from being discharged from the discharge pipe 441. The screw shaft drive motor 443 drives the discharge screw shaft 442 to rotate, continuously discharging the zirconium oxide from the discharge pipe 441.

[0043] In one embodiment of the present invention, such as Figure 3 As shown, the transmission assembly 33 includes a material conveying screw shaft 332 and a grate plate 334. The material conveying screw shaft 332 is inclinedly arranged inside the soaking tank 31. A reduction motor 331 for driving the rotation of the material conveying screw shaft 332 is provided at the bottom end of the material conveying screw shaft 332. A return channel 335 is provided at the top of the second sedimentation tank 32. The grate plate 334 is arranged on the upper surface of the return channel 335 and is located on the lower surface of the material conveying screw shaft 332. The spiral edge of the material conveying screw shaft 332 is scraped on the surface of the grate plate 334 by a brush. The bottom of the return channel 335 is connected to the inside of the soaking tank 31 by a return water pipe 333.

[0044] Specifically, after pickling, the zirconium oxide enters the soaking tank 31 and is mixed with clean water for soaking. The zirconium oxide falls continuously under gravity and sinks into the second sedimentation tank 32. At this time, the reduction motor 331 drives the conveying screw shaft 332 to rotate slowly. The conveying screw shaft 332 continuously tilts and transfers the zirconium oxide upward. When the zirconium oxide is fed into the grate plate 334, the water in the zirconium oxide permeates through the grate plate 334 into the return tank 335, and is sent back to the soaking tank 31 through the return water pipe 333 at the bottom of the return tank 335. After being grated, the zirconium oxide continues to be conveyed upward through the conveying screw shaft 332 to the drying box 41.

[0045] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the feeding hopper 11 is located at the feed end of the grate mesh belt 131, and the discharge assembly 12 is located at the bottom of the feeding hopper 11. The discharge assembly 12 includes a discharge port 121 and a discharge roller 123. The discharge port 121 is located at the bottom of the feeding hopper 11, and the discharge roller 123 is located at the outlet of the discharge port 121. A discharge roller drive motor 122 for driving the discharge roller 123 to rotate is provided on the discharge port 121.

[0046] Specifically, during the feeding process, zirconium oxide is placed in the feeding hopper 11, and then the feeding roller 123 is driven to rotate by the feeding roller drive motor 122. The rotation of the feeding roller 123 gradually releases the zirconium oxide from the feeding hopper 11, so that the zirconium oxide is spread evenly on the grate mesh belt 131.

[0047] In one embodiment of the present invention, such as Figure 2 As shown, water-blocking rubber strips 132 are provided on both sides of the grate mesh belt 131, and a rolling roller 14 is provided on the upper surface of the grate mesh belt 131. A support roller 141 is provided on the back of the rolling roller 14 and vertically below the grate mesh belt 131. A scraper 15 is provided at the discharge end of the grate mesh belt 131. A conveyor belt rinsing assembly 25 is provided below the grate mesh belt 131. The conveyor belt rinsing assembly 25 includes a rinsing head 251, a suction pipe 252, and a rinsing pump 253. The rinsing pump 253 is located below the grate mesh belt 131, the rinsing head 251 is inclined upward at the discharge end of the rinsing pump 253, and the suction pipe 252 is located at the inlet end of the rinsing pump 253.

[0048] Specifically, after the grate conveyor belt 131 carries the zirconium oxide into the pickling tank 21, the zirconium oxide is ground by the grinding roller 14. On the one hand, the zirconium oxide is spread evenly on the grate conveyor belt 131, and on the other hand, the surface residue of the zirconium oxide powder particles is squeezed off. After pickling, the zirconium oxide is scraped into the soaking tank 31 by the scraper plate 15. The zirconium oxide residue on the surface of the grate conveyor belt 131 falls into the first deposition tank 23 after being washed by the flushing head 251.

[0049] In one embodiment of the present invention, such as Figure 4 As shown, a return pump 221 is installed on the return pipe 22, and a funnel-shaped back suction port 223 is installed at the water inlet end of the return pipe 22. The first sedimentation tank 23 has an inverted conical structure, and a plug 231 is installed at the bottom of the first sedimentation tank 23. The back suction port 223 is located directly above the plug 231, and one end of the plug 231 corresponding to the back suction port 223 has a conical structure.

[0050] Specifically, acid can be injected into or discharged into the pickling tank 21 by opening the plug 231. The plug 231 with a conical head structure is located directly below the back suction port 223 and plays a guiding role. During the absorption process at the back suction port 223, a small amount of zirconium oxide at the bottom of the first deposition tank 23 will mix with the acid and move upward along the outer wall of the plug 231 and be sucked into the back suction port 223 together, preventing zirconium oxide residue at the bottom of the first deposition tank 23.

[0051] To clearly illustrate the above embodiments, refer to Figures 1-6 The specific working principle of the zirconia powder cleaning equipment of the present invention is as follows: First, zirconia is placed in the feeding hopper 11. The discharge roller drive motor 122 drives the discharge roller 123 to rotate, so that the zirconia is discharged from the feeding hopper 11 and spread evenly on the grate mesh belt 131. The rotation of the drive roller 133 drives the grate mesh belt 131 to transfer the zirconia to the right. After the grate mesh belt 131 carries the zirconia into the pickling tank 21, the return pump 221 absorbs the acid in the pickling tank 21 through the return pipe 22 and sprays it onto the zirconia through the spray plate 24, so that it can fully contact the acid. After the acid is filtered by the grate mesh belt 131, it falls back to the bottom of the pickling tank 21 for reuse by the return pipe 22. During the pickling process, the grinding roller 14 grinds the zirconia, both spreading the zirconia evenly on the grate mesh belt 131 and squeezing and peeling off the residue from the surface of the zirconia powder particles, so that the pickling is more thorough.

[0052] Next, the acid-washed zirconia continues to be conveyed to the right via the grate conveyor belt 131 and is swept into the soaking tank 31 by the scraper plate 15. The zirconia residue on the surface of the grate conveyor belt 131 is washed away by the flushing head 251 and falls into the first deposition tank 23, where it is reused by the return pump 221. After entering the soaking tank 31, the zirconia is mixed with clean water and soaked, then sinks into the second deposition tank 32 under gravity. The soaking tank 31 is filled with clean water through the inlet 342 and discharged through the outlet 341, keeping the water clear and ensuring that the acid on the surface of the zirconia powder particles is fully diluted and purified.

[0053] Subsequently, the geared motor 331 drives the conveyor screw shaft 332 to rotate slowly, tilting and transferring the zirconium oxide upwards. When the zirconium oxide reaches the grate plate 334, the water permeates through the grate plate 334 into the return tank 335, and then is sent back to the soaking tank 31 through the return water pipe 333. After being grated, the zirconium oxide continues to be conveyed upwards through the conveyor screw shaft 332 to the drying chamber 41.

[0054] In the drying oven 41, zirconia is stir-fried by the stirring rod 47 in the frying tray 46, causing the surface moisture to evaporate and maintaining a fluffy state. The air pump 432 draws in external air and sends it to the heating tube 433. The electric heating elements on the surface of the heating tube 433 heat the air, which is then sent through the air supply connector 434 to the rotating stirring rod 47, and then through the hollow stirring rod 47 to the air outlet. The hot airflow accelerates the drying of the zirconia during the stirring and frying process, and water vapor is absorbed into the hot air and expelled, thus rapidly drying the zirconia.

[0055] Meanwhile, the hot air in the drying chamber 41 is transferred to the heat exchange tube 222 through the waste heat pipe 45 to heat the acid solution in the return pipe 22, increase the acid solution temperature, enhance the chemical reaction activity, and make full use of the heat. Finally, the screw shaft drive motor 443 drives the discharge screw shaft 442 to rotate, continuously discharging zirconium oxide from the discharge pipe 441.

[0056] In summary, the zirconia powder cleaning equipment of this invention uses a grate conveyor belt to feed zirconia into an acid pickling tank. The zirconia is sprayed with acid in the tank, causing the surface of the zirconia powder particles to be acid-washed. The acid-washed zirconia is then sent to a soaking tank for immersion in clean water, which fully dilutes and removes the acid from the surface of the zirconia powder particles. Finally, the soaked zirconia is heated and stir-fried in a drying oven to ensure it is fully dried without clumping, thus improving the cleaning effect and reducing surface residue after acid washing.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A zirconia powder cleaning apparatus characterized by comprising: Including walking mechanism (1), pickling mechanism (2) and bubble wash mechanism (3), wherein the walking mechanism (1) is used to send raw material zirconia into pickling mechanism (2); The pickling mechanism (2) includes pickling tank (21) and spray plate (24), wherein the spray plate (24) is arranged inside the pickling tank (21), the spray plate (24) is located above the walking mechanism (1), the bottom of the pickling tank (21) is provided with a first sedimentation tank (23), the inner side of the first sedimentation tank (23) is provided with a reflux pipe (22), the reflux pipe (22) is connected with the spray plate (24); The bubble washing mechanism (3) is used for water immersion of the pickled zirconia to remove the surface acid liquid, and the bubble washing mechanism (3) includes a bubble washing tank (31), a second sedimentation tank (32) and a transmission assembly (33), wherein the bubble washing tank (31) is arranged at the output end of the pickling tank (21), the second sedimentation tank (32) is arranged at the bottom of the bubble washing tank (31), and the transmission assembly (33) is arranged inside the second sedimentation tank (32), and the transmission assembly (33) is used for transmitting the bubble washed zirconia.

2. The zirconia oxide powder cleaning apparatus according to claim 1, characterized by, The output end of the transmission assembly (33) is provided with a drying mechanism (4), the drying mechanism (4) includes a drying box (41) and a stirring rod (47), wherein the drying box (41) is arranged at the output end of the transmission assembly (33), the bottom of the drying box (41) is provided with a frying tray (46) with an inverted tapered structure, the stirring rod (47) is rotatably arranged on the upper surface of the frying tray (46), and the inner wall of the frying tray (46) is provided with a heating plate (461); The drying box (41) is provided with a hot gas assembly (43), the hot gas assembly (43) is used for supplying hot air to the inside of the drying box (41), and the hot gas assembly (43) includes a heating box (431), a blowing pump (432) and a heating pipe (433), wherein the heating box (431) is arranged on the drying box (41), the heating pipe (433) is arranged inside the heating box (431), the air inlet end of the heating pipe (433) is connected with the blowing pump (432), and the air outlet end of the heating pipe (433) is in communication with the inside of the drying box (41).

3. The zirconia oxide powder cleaning apparatus according to claim 2, characterized by, The stirring rod (47) is a hollow structure, a rotatable air supply joint (434) is arranged at the top of the stirring rod (47), the stirring rod (47) is in communication with the heating pipe (433) through the air supply joint (434), one side of the stirring rod (47) in contact with the frying tray (46) is provided with an air outlet hole, and the air outlet hole is in communication with the inside of the stirring rod (47).

4. The zirconia oxide powder cleaning apparatus according to claim 3, characterized by The top of the drying box (41) is provided with a waste heat pipe (45), the inside of the pickling tank (21) is provided with a heat exchange pipe (222), the heat exchange pipe (222) is in communication with the waste heat pipe (45), and the heat exchange pipe (222) is arranged on the outer surface of the reflux pipe (22).

5. The zirconia oxide powder cleaning apparatus according to claim 2, wherein The bottom of the drying box (41) is provided with a discharging assembly (44), which comprises a discharging pipe (441), a discharging screw shaft (442) and a screw shaft driving motor (443), wherein the discharging pipe (441) is arranged at the bottom discharging end of the frying tray (46), the discharging screw shaft (442) is arranged inside the discharging pipe (441), and the power shaft of the screw shaft driving motor (443) is connected with the discharging screw shaft (442).

6. The zirconia oxide powder cleaning apparatus according to claim 1, wherein The conveying assembly (33) comprises a conveying screw shaft (332) and a water draining plate (334), wherein the conveying screw shaft (332) is arranged inside the soaking box (31) in an inclined manner, the bottom end of the conveying screw shaft (332) is provided with a speed reducer (331) for driving the rotation of the conveying screw shaft (332), the top of the second sedimentation tank (32) is provided with a backflow tank (335), the water draining plate (334) is arranged on the upper surface of the backflow tank (335), and the water draining plate (334) is located below the conveying screw shaft (332), and the bottom of the backflow tank (335) is connected with the inside of the soaking box (31) through a backwater pipe (333).

7. The zirconia oxide powder cleaning apparatus according to claim 1, wherein The walking mechanism (1) comprises a feeding hopper (11), a discharging assembly (12) and a conveying belt assembly (13), wherein the conveying belt assembly (13) horizontally penetrates the pickling tank (21), the conveying belt assembly (13) comprises a water draining mesh belt (131) and a driving roller (133), wherein the driving roller (133) is located on the inner side of the water draining mesh belt (131), and the driving roller (133) is rotationally connected with the pickling tank (21).

8. The zirconia oxide powder cleaning apparatus according to claim 7, characterized by The feeding hopper (11) is arranged at the feeding end of the water draining mesh belt (131), the discharging assembly (12) is arranged at the bottom of the feeding hopper (11), and the discharging assembly (12) comprises a discharging port (121) and a discharging roller (123), wherein the discharging port (121) is arranged at the bottom of the feeding hopper (11), and the discharging roller (123) is arranged at the outlet of the discharging port (121).

9. The zirconia oxide powder cleaning apparatus according to claim 7, wherein The water draining mesh belt (131) is provided with a water blocking rubber strip (132) on both sides, the upper surface of the water draining mesh belt (131) is provided with a rolling roller (14), the discharging end of the water draining mesh belt (131) is provided with a scraping plate (15), and the lower side of the water draining mesh belt (131) is provided with a conveying belt flushing assembly (25), which comprises a flushing head (251), a liquid suction pipe (252) and a flushing pump (253), wherein the flushing pump (253) is arranged below the water draining mesh belt (131), the flushing head (251) is arranged at the liquid outlet end of the flushing pump (253) in an inclined upward manner, and the liquid suction pipe (252) is arranged at the liquid inlet end of the flushing pump (253).

10. The zirconia oxide powder cleaning apparatus according to claim 1, wherein, The backflow pipe (22) is provided with a backflow pump (221), the water inlet end of the backflow pipe (22) is provided with a trumpet-shaped back-suction port (223), the first deposition tank (23) is a reverse conical structure, the bottom of the first deposition tank (23) is provided with a plug (231), the back-suction port (223) is located directly above the plug (231), and one end of the plug (231) corresponding to the back-suction port (223) is a conical structure.

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